In addition to space use allocation, indoor environmental comfort is at the forefront of building performance analysis. Occupant dissatisfaction with indoor environments has far-reaching economic implications for workplaces. As people typically spend over 90% of their time indoors, indoor environment quality influences their comfort, performance, health, and well-being. Occupant dissatisfaction with indoor environments can result in health impacts, absenteeism, and reduced productivity [1]}. Not only do enterprises today associate a majority of their costs (80-90%) to workers compensation and benefits [2]}, [3]}, [4]} but as people typically spend more (about 90%) time indoors, the quality of the indoor environments influences their comfort, performance and well-being at work. Continual occupant dissatisfaction with indoor environments can result in health impacts, absenteeism, and reduced productivity [1]}. A comparison of recent field studies from 467 air-conditioned buildings containing 24,000 occupants showed between 30% and 200% more cases of sick building syndrome symptoms than in the occupants of naturally ventilated buildings [6]}, [7]}. Another survey in 2012, of 52,980 occupants in 351 office buildings, found that 50% of the occupants were dissatisfied with their indoor environments [8]}.
